CN219286692U

CN219286692U - Electric connector assembly, connector terminal and plug terminal

Info

Publication number: CN219286692U
Application number: CN202320300794.8U
Authority: CN
Inventors: 徐国炜
Original assignee: Suzhou Yunzhong Electronic Technology Co ltd
Current assignee: Suzhou Yunzhong Electronic Technology Co ltd
Priority date: 2023-02-23
Filing date: 2023-02-23
Publication date: 2023-06-30
Anticipated expiration: 2033-02-23

Abstract

The utility model relates to an electric connector assembly, a connector terminal and a plug terminal, wherein the connector terminal comprises a base part and a sleeve sleeved on the base part, the base part comprises a butt joint part fixed in the sleeve, the butt joint part is provided with an accommodating space for accommodating the plug terminal, a pair of side walls positioned at the upper side and the lower side of the accommodating space and a pair of end walls positioned at the left end and the right end of the accommodating space, the edge of the sleeve is provided with an elastic piece which is bent inwards and inserted in the accommodating space, the elastic piece is provided with a plurality of contact parts respectively used for contacting and matching with the plug terminal and the side walls of the base part, the end walls of the base part are provided with elastic arms, the elastic arms are provided with first clamping parts for clamping the plug terminal, the side parts of the plug terminal are provided with second clamping parts corresponding to the first clamping parts, and the second clamping parts are in clamping fit with the first clamping parts. Which further increases the retention force between the plug terminal and the connector terminal while securing the fixing of the plugging position of the plug terminal.

Description

Electric connector assembly, connector terminal and plug terminal

Technical Field

The present utility model relates to an electrical connector assembly, a connector terminal, and a plug terminal, and more particularly, to an electrical connector assembly, a connector terminal, and a plug terminal capable of increasing a holding force between a plug terminal and a connector terminal.

Background

In the prior art, automobile connector terminals are widely used in ABS systems (Antilock Brake System, antilock brake systems) and ESC systems (Electronic Stability Controller, vehicle body electronic stability control systems). The automobile connector terminal generally comprises a base part and a sleeve sleeved on the base part, wherein an elastic piece is integrally bent on the sleeve, and a plurality of contact parts arranged on the elastic piece are elastically contacted with the plug terminal to realize electric connection.

However, when the automobile connector terminal and the plug terminal set in the prior art are assembled, in order to facilitate the plug terminal to be plugged and reduce the abrasion of the conductive coating of the contact part in the plug terminal plugging process, the pressure of the contact part of the elastic piece to the plug terminal is usually not too large, so that the contact part and the plug terminal are easy to loose, the plug terminal is easy to fall off from the automobile connector terminal when being vibrated, and the stability of electric connection is reduced. In addition, when inserting the plug terminal, can't guarantee in the prior art that the grafting position of plug terminal all is the same position at every turn, the grafting position is not fixed, influences performance.

Disclosure of Invention

The utility model aims to provide a connector terminal, which can further increase the retention force between a plug terminal and the connector terminal while ensuring the fixed plug position of the plug terminal.

The aim of the utility model is achieved by the following technical scheme:

the connector terminal comprises a base part and a sleeve sleeved on the base part, wherein the base part comprises a butt joint part fixed in the sleeve, the butt joint part is provided with a containing space for containing the plug terminal, a pair of side walls positioned at the upper side and the lower side of the containing space and a pair of end walls positioned at the left end and the right end of the containing space, the edge of the sleeve is provided with an elastic piece which is bent inwards and inserted in the containing space, the elastic piece is provided with a plurality of contact parts which are respectively used for being contacted and matched with the plug terminal and the side walls of the base part, the end walls of the base part are provided with elastic arms, and the elastic arms are provided with first clamping parts which are clamped with the plug terminal.

Further, one end of the elastic arm is connected to the base portion, the other end of the elastic arm is a free end, and the first clamping portion is arranged at the free end.

Further, the first clamping part is a protruding part or a groove.

Further, the side surface of the protruding portion, which faces the plug terminal, is provided with an arc surface, the arc surface is used for being in contact with the plug terminal, and the arc surface protrudes towards the central shaft of the sleeve.

Further, the free end is located at the rear of the elastic arm along the plug terminal insertion direction, the elastic arm gradually and obliquely extends inwards along the plug terminal insertion direction, and the first clamping portion is located in the accommodating space of the base portion.

Further, the plurality of contact portions includes at least one pair of inner contact portions for contact-fitting with the plug terminal and at least one pair of outer contact portions for contact-fitting with the side wall, and the first holding portion is located rearward of the at least one pair of inner contact portions in the direction in which the plug terminal is inserted.

Further, the at least one pair of outer contact portions includes a first outer contact portion located between the at least one pair of inner contact portions and a second outer contact portion located near the free end of the elastic arm, the first catching portion being located in front of the second outer contact portion in the direction in which the plug terminal is inserted.

Further, fixing openings are formed in two opposite end walls of the abutting portion, and the first clamping portions of the elastic arms extend obliquely from the fixing openings into the accommodating space.

Further, in the insertion direction of the plug terminal, one end of the elastic arm is fixed to one side edge of the fixing port and the other end does not exceed the other side edge of the fixing port.

Further, the elastic arm is integrally formed by stamping from the base part, the elastic arm is integrally contained in the sleeve, and the thickness of the plate of the elastic arm is larger than that of the plate of the elastic piece.

The utility model also provides a plug terminal matched with the connector terminal, wherein a second clamping part is arranged on the side part of the plug terminal corresponding to the first clamping part, and the second clamping part is in clamping fit with the first clamping part.

Further, one of the first clamping part and the second clamping part is a protruding part, and the other is a groove in clamping fit with the protruding part.

Further, the protruding portion is provided with an arc surface, the groove is formed by surrounding two inclined walls arranged at an included angle, and in the clamping and matching state of the protruding portion and the groove, the two inclined walls are in a planar structure and are tangent to the arc surface, so that line contact is formed between the protruding portion and the two inclined walls of the groove.

Further, the radius of an inscribed circle tangent to the two inclined walls at the same time is set to be R1, and the radius of the arc surface is set to be R2, wherein R2 is more than R1.

Further, the pair of end walls are respectively provided with the first clamping portions and are symmetrically arranged by taking the central axis of the sleeve as a symmetrical axis, and the second clamping portions are respectively arranged on two opposite sides of the plug terminal.

The utility model also provides an electric connector assembly, which comprises a connector terminal and a plug terminal matched with the connector terminal, wherein the connector terminal comprises a base part and a sleeve sleeved on the base part, the base part comprises a butt joint part fixed in the sleeve, the butt joint part is provided with an accommodating space of the plug terminal, a pair of side walls positioned at the upper side and the lower side of the accommodating space and a pair of end walls positioned at the left end and the right end of the accommodating space, the edge of the sleeve is provided with an elastic piece which is bent inwards and inserted into the accommodating space, the elastic piece is provided with a plurality of contact parts respectively used for being contacted and matched with the plug terminal and the side walls of the base part, the end wall of the base part is provided with an elastic arm, the elastic arm is provided with a first clamping part clamped with the plug terminal, and the side part of the plug terminal is provided with a second clamping part corresponding to the first clamping part and matched with the first clamping part.

In the utility model, the elastic arm arranged on the end wall of the base part of the connector terminal is provided with the first clamping part for elastically clamping the plug terminal, correspondingly, the side surface of the plug terminal is provided with the second clamping part for clamping the connector terminal, and the second clamping part is in clamping fit with the first clamping part, so that the plug position of the plug terminal is ensured to be fixed, the holding force between the plug terminal and the connector terminal is further increased, and the plug and the pull of the plug terminal are not influenced.

Drawings

Fig. 1 is a schematic perspective view of a connector terminal and a plug terminal according to a preferred embodiment of the present utility model.

Fig. 2 is a schematic top view of fig. 1.

Fig. 3 is an exploded view of fig. 1.

Fig. 4 is a schematic structural diagram of fig. 3 at another view angle.

Fig. 5 is a schematic cross-sectional view of fig. 2 along line A-A.

Fig. 6 is a schematic cross-sectional view of fig. 2 along line B-B.

Fig. 7 is a schematic diagram of the front view structure of fig. 1.

Fig. 8 is a schematic cross-sectional view of a portion of the structure of fig. 7 along line C-C.

Fig. 9 is a schematic view of the structure of the plug terminal in fig. 8 when the plug terminal is not fully inserted into the connector terminal.

Fig. 10 is an enlarged view of fig. 7 at D.

Description of the main reference signs

Please refer to the following reference numerals for description, 100, connector terminals; 10. a base; 11. a butt joint part; 112. an accommodating space; 113. a first socket; 114. a second socket; 115. a notch; 116. a fixed port; 117. a sidewall; 118. an end wall; 12. an extension; 121. a buckling part; 15. an elastic arm; 151. a first clamping part; 152. an arc surface; 30. a sleeve; 31. an elastic member; 310. a contact portion; 312. a reverse folding part; 314. a first inner contact portion; 315. a first outer contact; 316. a second inner contact portion; 317. a second outer contact; 32. a flat plate portion; 33. a connection part; 34. a spring plate; 35. an elastic part; 351. a mating portion; 200. a plug terminal; 210. a second clamping part; 211. an inclined wall; 220. a leading end.

Detailed Description

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner" and "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that the term "connected" should be interpreted broadly, unless explicitly stated and defined otherwise, and the specific meaning of the above term in the present utility model will be understood by those skilled in the art according to the specific circumstances.

Referring to fig. 1 to 5, a preferred embodiment of the present utility model provides a connector terminal 100, wherein the connector terminal 100 includes a base 10 and a sleeve 30 sleeved on the base 10, an edge of the sleeve 30 is provided with an elastic member 31 bent inwards and inserted into the base 10, and the elastic member 31 is provided with a plurality of contact portions 310 elastically contacting the base 10 to achieve electrical connection. The connector terminal 100 is in plug-in fit with the plug terminal 200, and the plug terminal 200 is inserted into the base 10 and elastically contacts the contact portion 310, thereby electrically connecting with the connector terminal 100.

Referring to fig. 7 to 9, the base 10 is formed with an elastic arm 15, and the elastic arm 15 is provided with a first clamping portion 151 for clamping the plug terminal 200. Referring to fig. 5 and 6, in the present embodiment, the base 10 includes a mating portion 11 fixed in the sleeve 30, and the mating portion 11 is configured in a frame shape and has a housing space 112 into which the plug terminal 200 is inserted, a pair of side walls 117 located on the upper and lower sides of the housing space 112, and a pair of end walls 118 located on the left and right ends of the housing space 112. The receiving space 112 penetrates through opposite ends of the mating portion 11 to form a first socket 113 and a second socket 114 which are disposed opposite to each other, and the first socket 113 is located in front of the second socket 114 in the insertion direction of the plug terminal 200, that is, the plug terminal 200 is first inserted into the receiving space 112 through the first socket 113. In the present embodiment, one of the upper and lower opposite side walls 117 of the abutting portion 11 extends rearward to form the extension portion 12.

In the present embodiment, the elastic arms 15 are provided in pairs, and the two elastic arms 15 in each pair are provided on the opposite end walls 118 of the base 11 in the width direction, respectively, and are symmetrically provided with the central axis of the sleeve 30 as the symmetry axis. One end of the elastic arm 15 is connected with the base 10, and the other end is a free end; the elastic arm 15 is gradually inclined inwardly in the insertion direction of the plug terminal 200, and the free end is located behind the elastic arm 15 in the direction in which the plug terminal 200 is inserted. The first clamping part 151 of the elastic arm 15 is arranged at the free end, the first clamping part 151 extends into the accommodating space 112 to be clamped with the plug terminal 200, and the first clamping part 151 is positioned in the accommodating space 112 of the base 11; and the first retaining portion 151 is located behind the inner contact portion (not identified) in the insertion direction of the plug terminal 200, that is, the first retaining portion 151 is closer to the second socket 114 than the inner contact portion (not identified). In the present embodiment, the elastic arm 15 is integrally press-molded from the base 10. The opposite end walls 118 of the abutting portion 11 along the width direction are provided with fixing openings 116, the first clamping portions 151 of the elastic arms 15 extend obliquely from the fixing openings 116 into the accommodating space 112, specifically, one ends of the elastic arms 15 are fixedly connected to the groove walls corresponding to the fixing openings 116 to form a cantilever structure, and in the insertion direction of the plug terminal 200, one ends of the elastic arms 15 are fixed to one side edge of the fixing openings 116, and the other ends of the elastic arms are not beyond the other side edge of the fixing openings 116. In the present embodiment, the elastic arm 15 is entirely accommodated in the sleeve 30. The first retaining portion 151 is an arc-shaped protruding portion, and an arc surface 152 is disposed on a side of the protruding portion facing the plug terminal 200, and the arc surface 152 protrudes inward, that is, the arc surface 152 protrudes toward the central axis direction of the sleeve 30 and is used for elastically contacting the plug terminal 200.

In the present embodiment, the sleeve 30 is provided in a frame shape and surrounds the outer periphery of the abutting portion 11 of the base 10, and the sleeve 30 includes two flat plate portions 32 provided vertically opposite to each other and two connecting portions 33 provided opposite to each other, and the connecting portions 33 connect the two flat plate portions 32. The flat plate portion 32 is connected to the base 10, specifically, a spring piece 34 bent sideways is provided on the flat plate portion 32, and in this embodiment, the spring piece 34 is formed by bending from the outer side to the inner side of a corresponding punching hole (not shown); the opposite upper and lower side walls 117 of the abutting portion 11 of the base 10 are respectively provided with a corresponding notch 115, and the elastic sheet 34 is accommodated in the notch 115, so that the interlocking of the base 10 and the sleeve 30 is realized through the snap fit of the notch 115 and the elastic sheet 34, and the base 10 and the sleeve 30 are better fixed. In this embodiment, two symmetrically disposed notches 115 are provided on each of the upper and lower opposite side walls 117 of the docking portion 11 to form an interlock with the sleeve 30. In the present embodiment, one of the flat plate portions 32 of the sleeve 30 is extended rearward to form an elastic portion 35, and the elastic portion 35 is provided corresponding to the extending portion 12.

The two flat plate portions 32 are respectively provided with an elastic member 31, and the elastic members 31 are bent inwards from the end edges of the corresponding flat plate portions 32 and extend to be inserted into the accommodating space 112. In the present embodiment, the elastic member 31 is located between the two flat plate portions 32 and is located in the accommodating space 112 at positions respectively close to the side walls 117 of the abutting portion 11. The elastic member 31 elastically contacts the sidewall 117 of the mating portion 11 and the plug terminal 200, respectively, to achieve electrical connection.

In the present embodiment, the elastic member 31 is provided with an arc-shaped folded portion 312 which is folded inward and rearward by 180 degrees from the front end edge of the flat plate portion 32, and a plurality of contact portions 310 which are sequentially connected in the direction along which the plug terminal 200 is inserted, and the plurality of contact portions 310 are respectively used for contact-fit with the plug terminal 200 and the side wall 117 of the base 10, so that the electric current transmission and the heat dissipation are facilitated. In the present embodiment, the plurality of contact portions 310 includes at least one pair of inner contact portions (not shown) for contact-fitting with the plug terminal 200 and at least one pair of outer contact portions (not shown) for contact-fitting with the side walls 117, and the first catching portion 151 is located behind the at least one pair of inner contact portions in the direction in which the plug terminal 200 is inserted; in the present embodiment, at least one pair of the outer contact portions includes a first outer contact portion 315 located between at least one pair of the inner contact portions and a second outer contact portion 317 located near the free end of the elastic arm 15, and the first retaining portion 151 is located in front of the second outer contact portion 317 in the direction in which the plug terminal 200 is inserted. The at least one pair of inner contact portions includes a first inner contact portion 314 connected to the inflection portion 312 and a second inner contact portion 316 located between the first outer contact portion 315 and the second outer contact portion 317, the first inner contact portion 314, the first outer contact portion 315, the second inner contact portion 316, and the second outer contact portion 317 being sequentially connected in a direction in which the plug terminal 200 is inserted. The first inner contact portion 314, the first outer contact portion 315, the second inner contact portion 316 and the second outer contact portion 317 are all in a substantially arc-shaped curved shape, and the first inner contact portion 314 and the second inner contact portion 316 protrude toward the center of the sleeve 30, and the first outer contact portion 315 and the second outer contact portion 317 protrude toward a direction away from the center of the sleeve 30, so that the first inner contact portion 314, the first outer contact portion 315, the second inner contact portion 316 and the second outer contact portion 317 form a continuous wave structure. When the plug terminal 200 is inserted into the accommodating space 112, the first outer contact portion 315 and the second outer contact portion 317 are abutted outwardly on the side wall 117 of the corresponding abutting portion 11, and the first inner contact portion 314 and the second inner contact portion 316 are elastically abutted against the plug terminal 200, so as to achieve electrical connection and improve the connection stability of the elastic member 31 and the plug terminal 200.

Referring to fig. 10, in the present embodiment, the base 10 is further provided with a fastening portion 121 protruding toward the sleeve 30, and the sleeve 30 is provided with a fitting portion 351 protruding toward the base 10, and the fitting portion 351 and the fastening portion 121 are press-fitted to each other. Specifically, the engaging portion 121 is protruding on the extension portion 12 of the base 10, and the engaging portion 351 is protruding on the elastic portion 35 of the sleeve 30. The buckling part 121 is matched with the matching part 351 of the sleeve 30, and the elastic part 35 can be greatly deformed outwards during matching, so that the reliability of combination of the buckling part 121 and the sleeve 30 is improved, and the matching tightness of the butt joint part 11 and the flat plate part 32 is improved, so that better electrical and mechanical connection matching performance of the base part 10 and the sleeve 30 is ensured.

The present embodiment also provides a plug terminal 200 to be used in combination with the connector terminal 100, wherein the plug terminal 200 is formed by punching a metal plate or the like. In the present embodiment, the side portion of the plug terminal 200 is provided with the second retaining portion 210 corresponding to the first retaining portion 151, and the second retaining portion 210 is engaged with the first retaining portion 151. In the present embodiment, the second latching portions 210 are provided on opposite sides of the plug terminal 200. In this embodiment, the second clamping portion 210 has a groove structure that is in clamping engagement with the first clamping portion 151. The second clamping portion 210 is formed by surrounding at least two inclined walls 211 arranged at an included angle, and the radius of an inscribed circle tangent to the two inclined walls 211 is set as R1, and the radius of the arc surface 152 of the first clamping portion 151 is set as R2, wherein R2 is greater than R1. When the second clamping portion 210 is clamped and matched with the first clamping portion 151, the two inclined walls 211 are tangent to the arc surface 152 of the first clamping portion 151 to form line contact, and the first clamping portion 151 and the second clamping portion 210 are tangentially matched in a two-point manner when viewed from the section shown in fig. 8, so that the matching positions of the two clamping portions are more stable, the accuracy of mutual positioning of the two clamping portions is further ensured, and the matching of the plug terminal 200 and the connector terminal 100 is prevented from being deviated.

In use, the plug terminal 200 is inserted into the accommodating space 112 of the base 10 via the first socket 113, the elastic arms 15 enter the opposite sides of the plug terminal 200 via the guide ends 220 thereof, and when the sides of the plug terminal 200 are in contact with the elastic arms 15, the elastic arms 15 deform outwards to allow the plug terminal 200 to continue to be inserted; when the second clamping portion 210 of the plug terminal 200 moves to the first clamping portion 151, the first clamping portion 151 is clamped with the second clamping portion 210 under the action of the elastic force of the elastic arm 15, so as to position the insertion position of the plug terminal 200, and the holding force between the plug terminal 200 and the connector terminal 100 is increased by clamping the second clamping portion 210 with the first clamping portion 151; since the elastic arm 15 can be elastically deformed, and the first clamping portion 151 is disposed behind the inner contact portion of the elastic member 31 and located on the side surface of the plug terminal 200, that is, the position of the first clamping portion 151 is away from the position where the plug terminal 200 is inserted, and the clamping position of the first clamping portion is different from the electrical contact position of the plug terminal 200, it is possible to increase the retention force of the plug terminal 200 without affecting the insertion and extraction of the plug terminal 200 and the electrical contact. In this embodiment, the first clamping portion 151 of the elastic arm 15 is a convex portion with a circular arc shape, the second clamping portion 210 is a groove structure that is clamped and matched with the first clamping portion 151, the second clamping portion 210 is formed by surrounding at least two inclined walls 211 with an included angle, the two inclined walls 211 are planar structures and tangent to the circular arc surface 152 in the state that the convex portion is clamped and matched with the groove, so that a line contact is formed between the convex portion and the two inclined walls 211 of the groove, further, the convex portion and the two inclined walls 211 form two-point contact on the section shown in fig. 8, the two-point contact can ensure the stability of contact, and the inclination of the clamping position or the shaking of the elastic arm 15 in the second clamping portion 210 can not be caused, and the locking is firm. In addition, the radius of the inscribed circle tangent to the two inclined walls 211 is set to be R1, the radius of the arc surface 152 is set to be R2, and R2 > R1, that is, the curvature of the arc surface 152 is large, so that the arc surface 152 is ensured to be in contact with the two inclined walls 211 and not to shake, and if the curvature of the arc surface 152 is small, single-point contact may be caused, that is, only one inclined wall 211 is in point contact with the protruding portion, so that the inclination of the clamping position or the shake of the elastic arm 15 in the groove may be caused.

In the present embodiment, the pair of elastic arms 15 are provided in a pair, and after the pair of elastic arms 15 are engaged, both sides of the plug terminal 200 are symmetrically stressed, and no inclination occurs. The spring arms 15 are preferably cantilevered structures that are connected to the base 10 at one end and provide a suitable spring snap force so that the plug terminal 200, when retained, still provides the amount of activity required to withstand the vehicle's jolts. It will be appreciated that the structure of the elastic arm 15 is not limited to this embodiment, for example, in other embodiments, two opposite ends of the elastic arm 15 may be connected to the base 10, however, if two ends of the elastic arm 15 are connected to the base 10, the elastic clamping force of the elastic arm 15 on the plug terminal 200 may be too large, resulting in the plug terminal 200 being too dead, and no way to bear the amount of activity required by the vehicle shaking is provided. Further, in the present embodiment, the plate thickness of the elastic arm 15 may be larger than the plate thickness of the elastic member 31, thereby further improving the holding force of the elastic arm 15 to the header terminal 200.

In the present embodiment, the elastic arm 15 is provided on the end wall 118 of the base 10 to increase the holding force on the plug terminal 200, so that the arrangement of the elastic arm 15 does not affect the clamping force between the contact portion 310 of the elastic member 31 and the plug terminal 200, and the plug terminal 200 is not pulled out from the elastic member 31, so that the holding force on the plug terminal 200 is increased, and the abrasion caused by the conductive plating layer of the contact portion 310 during the plug terminal 200 pulling-out and inserting process is not increased.

In the present embodiment, the first retaining portion 151 of the elastic arm 15 is formed on the base 10 and the elastic arm 15 is entirely located in the sleeve 30, which can reduce the length of the plug terminal 200, which is advantageous for miniaturization of the device.

The present utility model still further provides an electrical connector assembly comprising the connector terminal 100 and the plug terminal 200.

It is to be understood that the structures of the first clamping portion 151 and the second clamping portion 210 are not limited to the present embodiment, and for example, in other embodiments, the first clamping portion 151 may be configured as a groove structure, and in this case, the second clamping portion 210 may be configured as a protrusion portion that is engaged with the first clamping portion 151.

It is understood that the structure of the elastic member 31 is not limited to the present embodiment, and other elastic members of other structures in the prior art may be used as long as they can elastically contact with the plug terminal 200 and realize electrical connection.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the technical solutions according to the embodiments of the present utility model.

The foregoing is only some, but not all, embodiments of the present utility model, and any equivalent modifications of the technical solution of the present utility model will be covered by the claims of the present utility model by a person of ordinary skill in the art from reading the present specification.

Claims

1. The utility model provides a connector terminal for with plug terminal connection cooperation, connector terminal includes the basal portion and overlaps and locate the sleeve of basal portion, the basal portion is including fixing butt joint portion in the sleeve, butt joint portion is equipped with and accepts the accommodation space of plug terminal, be located a pair of lateral wall of both sides about the accommodation space and be located a pair of end wall at the accommodation space left and right sides, telescopic edge is equipped with inwards buckles and inserts and locate elastic component in the accommodation space, the elastic component is equipped with and is used for respectively with plug terminal with a plurality of contact portions of the lateral wall contact complex of basal portion, its characterized in that: the end wall of the base is provided with an elastic arm, and the elastic arm is provided with a first clamping part clamped with the plug terminal.

2. The connector terminal of claim 1, wherein: one end of the elastic arm is connected to the base part, the other end of the elastic arm is a free end, and the first clamping part is arranged at the free end.

3. The connector terminal of claim 2, wherein: the first clamping part is a protruding part or a groove.

4. A connector terminal according to claim 3, wherein: the side of the protruding part facing the plug terminal is provided with an arc surface, the arc surface is used for being in contact with the plug terminal, and the arc surface protrudes towards the central shaft of the sleeve.

5. The connector terminal of claim 2, wherein: the free end is located behind the elastic arm along the plug terminal inserting direction, the elastic arm gradually and inwards extends in an inclined mode along the plug terminal inserting direction, and the first clamping part is located in the accommodating space of the base part.

6. The connector terminal of claim 2, wherein: the plurality of contact portions includes at least one pair of inner contact portions for contact-fitting with the plug terminal and at least one pair of outer contact portions for contact-fitting with the side wall, and the first holding portion is located rearward of the at least one pair of inner contact portions in the direction in which the plug terminal is inserted.

7. The connector terminal of claim 6, wherein: the at least one pair of outer contacts includes a first outer contact portion located between the at least one pair of inner contacts and a second outer contact portion located near the free end of the resilient arm, the first catch portion being located in front of the second outer contact portion in the direction in which the plug terminal is inserted.

8. The connector terminal of claim 1, wherein: the two opposite end walls of the butt joint part are respectively provided with a fixing opening, and the first clamping part of the elastic arm obliquely extends into the accommodating space from the fixing opening.

9. The connector terminal of claim 8, wherein: one end of the elastic arm is fixed to one side edge of the fixing port and the other end does not exceed the other side edge of the fixing port in the insertion direction of the plug terminal.

10. The connector terminal of claim 1, wherein: the elastic arm is integrally formed by stamping from the base part, the elastic arm is integrally contained in the sleeve, and the thickness of the plate of the elastic arm is larger than that of the plate of the elastic piece.

11. A plug terminal for use with the connector terminal of any one of claims 1 to 10, characterized in that: the side part of the plug terminal is provided with a second clamping part corresponding to the first clamping part, and the second clamping part is matched with the first clamping part in a clamping way.

12. The plug terminal of claim 11, wherein: one of the first clamping part and the second clamping part is a protruding part, and the other is a groove which is matched with the protruding part in a clamping mode.

13. The plug terminal of claim 12, wherein: the convex part is provided with an arc surface, the groove is formed by encircling at least two inclined walls arranged at an included angle, and in the clamping and matching state of the convex part and the groove, the two inclined walls are in a planar structure and are tangent to the arc surface so that line contact is formed between the convex part and the two inclined walls of the groove.

14. The plug terminal of claim 13, wherein: the radius of an inscribed circle tangent to the two inclined walls at the same time is set to be R1, and the radius of the arc surface is set to be R2, wherein R2 is more than R1.

15. The plug terminal of claim 11, wherein: the pair of end walls are respectively provided with the first clamping parts and symmetrically arranged by taking the central shaft of the sleeve as a symmetrical axis, and the second clamping parts are respectively arranged on two opposite sides of the plug terminal.

16. The utility model provides an electric connector assembly, includes connector terminal and with the plug terminal of connector terminal cooperation use, connector terminal includes the basal portion and overlaps and locate the sleeve of basal portion, the basal portion is including fixing butt joint portion in the sleeve, butt joint portion is equipped with the accommodation space of plug terminal, a pair of lateral wall that is located accommodation space upper and lower both sides and a pair of end wall that is located accommodation space left and right sides both ends, telescopic edge is equipped with inwards buckles and inserts and locate elastic component in the accommodation space, elastic component is equipped with be used for respectively with plug terminal with a plurality of contact portions of lateral wall contact complex of basal portion, its characterized in that: the end wall of the base is provided with an elastic arm, the elastic arm is provided with a first clamping part clamped with the plug terminal, the side part of the plug terminal is provided with a second clamping part corresponding to the first clamping part, and the second clamping part is in clamping fit with the first clamping part.